Owen Sinclair (13 November 1862 – 17 June 1927) was an Australian politician. He was a member of the Victorian Legislative Assembly from 1915 to 1917, representing Port Melbourne for the Australian La
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56b5acc0dfbc8e925486a6226ae3a34a160a389ecce6f8bff94ba3066bf8dd2. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/770b618b-94aa-4be7-941f-bbd49d5b1b7f.json and https://artists.proofprofile.net/proofs/artist/770b618b-94aa-4be7-941f-bbd49d5b1b7f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea53fbea30ad332c82dc7d7946dad50c18d4f570e3cefff8af4f4b339792f334. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2562923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8453c79463b1e4d7b394fd144074989d10d92661a3c0351312cde17dc96c9356. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:35:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2562925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3500eb957851929b0bbd02adf138f77e05cc43df8f7d645bf58b1897fe1475ec. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2562927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43623d04a09c882b21ee9c5c080f61ed6ee41734c721ca7ee80a76e9514f9355. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2562928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190eb5b123ddfa74ca37e07dd9f8eff226979a27595140e912bd0be2545de000. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2562929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe2df9401858468eb96d7ac02cb7336963e5e0745bbf28846ce2a05d482698a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2562930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179b692a76b15f4ebd6ba8b03fcbc35e1fbc7b26178d76c9d11c3d28228f9560. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:07:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2562931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23835628d3f1c96c08d163189d4b0883d839c6f3379e988a2f2cb919ae7c5876. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2562932.